Tirerill (Tír Oirill) is a barony in east County Sligo.[1] It corresponds to the ancient túath of Tir Ollíol.[2]
References
- ^ "Sligo History Project - Cairbre Drumcliabh". Allismotion.webs.com. Retrieved 26 April 2014.
- ^ "Sligo History Project - Tir Olliol". Allismotion.webs.com. Retrieved 26 April 2014.
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